Water treatment system

ABSTRACT

A method, system and apparatus for treating water is provided including a treatment mode comprising the steps of drawing said water from a pressurized water source through a controlling device to a treating vessel, the water inlet of said treating vessel being substantially at the top of a treating vessel, contacting said water with pressurized air present at the top of said treating vessel to release substantially all hydrogen sulfide and offensive odors present in the water and to dissolve oxygen in the water which reacts with soluble iron in the water to form ferric oxides, flowing the water through a filter bed of calcite mineral to remove substantially all sediment present in the water and to neutralize the ph of the water and to remove substantially all the ferric oxides from the water, the ferric oxides fastening to the calcite minerals and to already fastened ferric oxides, flowing the water to a final media means and to the outlet of the treating vessel.

BACKGROUND OF INVENTION

[0001] The invention relates to a method, system and apparatus fortreating water including a treatment mode comprising the steps ofdrawing said water from a pressurized water source through a controllingdevice to a treating vessel, the water inlet of said treating vesselbeing substantially at the top of a treating vessel, contacting saidwater with pressurized air present at the top of said treating vessel torelease substantially all hydrogen sulfide and offensive odors presentin the water and to dissolve oxygen in the water which reacts withsoluble iron in the water to form ferric oxides, flowing the waterthrough a filter bed of calcite mineral to remove substantially allsediment present in the water and to neutralize the ph of the water andto remove substantially all the ferric oxides from the water, the ferricoxides fastening to the calcite minerals and to already fastened ferricoxides, flowing the water to a final media means and to the outlet ofthe treating vessel and through the controlling device to a potablewater plumbing system connected thereto.

BRIEF SUMMARY OF THE INVEVTION

[0002] It is therefor an object of this invention to provide a watertreatment method, system and apparatus to effectively and efficientlyremove substantially all offensive and malodorous contaminants and gasescontained in ground water for use in a potable water system.

[0003] It is yet another object of this invention to provide a watertreatment method, system and apparatus to effectively and efficientlyremove substantially all ferrous bicarbonate, ferric hydroxide, hydrogensulfide, odors, sediment, acidity and small amounts of manganese fromground water using a single combination aeration treatment vessel.

[0004] The prior art is replete with all types of water treatmentsystems, methods apparatus that are susceptible to clogging causedprimarily by oxidized iron fastening to the interior surfaces of theseveral system components. This results primarily from the air inductionof the iron laden water from the well into the pressure and aerationtanks. It is well known that the consequences of the “coating” orfastening of oxidized iron to the interior surfaces of system componentsinclude restricted flow and diminished efficiency of the several systemcomponents. Ultimately, the entire system must be dismantled and cleanedor replaced.

[0005] U.S. Pat. No. 3,649,532 to McLean is an example of such aapproach of introducing the water into an aerator device. Air isentrained and mixed by turbulence into the water in a significantquantity, the water sucking air into the aerator device as it flows intothe pressure tank. This air entrained water will initiate the forming ofoxidized iron fastening to the interior surfaces of the several systemcomponents of the McLean system.

[0006] Similarly, U.S. Pat. No. 5,147,530 discloses a complicated loopsystem of treating well water in which a venturi nozzle mixes air intowater during the entire pump cycle.

BRIEF DESCRIPTION OF THE DRAWINGS

[0007] The above and other objects, features and advantages will be moreclearly understood and appreciated from the following DetailedDescription of the preferred embodiment of the present invention whentaken in conjunction with the accompanying drawings which illustrate theWater Treatment System of the present invention wherein:

[0008]FIG. 1 is an elevation of an embodiment of the Water TreatmentSystem of the present invention partially broken away for clarity ofillustration, with arrows schematically indicating the direction ofwater flow during the treatment mode.

[0009]FIG. 2 is an elevation of an embodiment of the Water TreatmentSystem of the present invention partially broken away for clarity ofillustration, with arrows schematically indicating the direction ofwater flow during the backwash mode.

[0010]FIG. 3 is an elevation of an embodiment of the Water TreatmentSystem of the present invention partially broken away for clarity ofillustration, with arrows schematically indicating the direction ofwater flow during the air injection mode.

[0011]FIG. 3a is an elevation of an enlarged view of the air injectionassembly of the control valve which is activated only during the airinjection mode of FIG. 3 with arrows schematically indicating thedirection of water and air flow during the air injection mode.

[0012]FIG. 4 is an elevation of an embodiment of the Water TreatmentSystem of the present invention partially broken away for clarity ofillustration, with arrows schematically indicating the direction ofwater flow during the rinse mode.

DETAILED DESCRIPTION

[0013] Referring now to the Figures there is shown a Water TreatmentSystem 10 which is particularly adapted to provide potable to anassociated plumbing system (not shown).

[0014] The Water Treatment System 10 is fluidly connected by inlet line12 to pressurized source such as a submersible well pump (not shown).The inlet line is fluidly connected via a check valve 14 to a controlvalve 16.

[0015] The operation of the well pump could be controlled by a cut-in,cut-out pressure switch (not shown) which senses the fluid pressuredownstream of the well pump, all as well known in the prior art.

[0016] The Water Treatment System 10 is fluidly connected by outlet line20, at the control valve 16, to an associated potable water plumbingsystem (not shown).

[0017] Control valve 16 may be selected from a wide variety of controlvalves such as the 2510 Econominder (T.M. of the Fleck Company) asmanufactured by the Fleck Company. The control valve 16 may be used asmanufactured except for several modifications which will be discussedfurther below.

[0018] The control valve 16 automatically controls the flow of water andtime durations during the four modes of operation of the presentinvention and is typically an electro-mechcanically driven device as isthe 2510 Econominder. As such, it is electrically connected to 115 voltreceptacle (not shown).

[0019] The control valve 16 attached to a treatment vessel or tank 18.Typically the control valve is threadably attached to the treatmentvessel 18 at the top thereof. The treatment vessel 18 may be selectedfrom a wide number available vessels used in well water applicationssuch as molded fiberglass tanks manufactured by International WaterWerks under their designated Model Numbers 1048 (10 inches in diameterand 48 inches in height), 1054 (10 inches in diameter and 54 inches inheight) and 1248 (12 inches in diameter and 48 inches in height). Thetreatment vessel 18 may typically have an inside diameter of between tenand twelve inches and have an interior height of between 48 and 54inches. As shown in FIG. 1, Line A represents the high pressure waterlevel cut-out point of the well pump and Line B represents the lowpressure water level cut-in point of the well pump. As further shown inFIG. 1, there is a pocket of compressed air 26 contained at the top ofvessel 18.

[0020] Also contained within vessel 18 is filter media 28 whichcomprises a about 98% by weight of calcium carbonate and about 0-2% byweight of magnesium oxide. The percentage of magnesium oxide isincreased as the acidity of the untreated water increases.

[0021] An example of such magnesium oxide 28 is that supplied by MartinMarietta Magnesia Specialties, Inc. of Manistee, Mich. 49660 under theirMagChem label; sized prilled 30.

[0022] An example of such calcite material is the limestone (with smallamounts of calcium magnesium oxide and crystalline silica quartz)supplied by Specialty Minerals of 260 Columbia Street, Adams, Mass.01220.

[0023] Further contained within vessel 18 is a gravel type filter media30. An outlet riser tube 22 having a strainer basket 24 at one endthereof disposed in the gravel media 30. The outlet riser tube 22 isfluidly connected at its other end to the control valve 16 and is influid communication with the outlet line 20 via the control valve 16.

[0024] An example of such gravel 30 is course sand supplied by SouthernProducts & Silica Company, Inc. of P.O. Box 189, Highway 1 N, Hoffman,N.C.; sized (31610) individual pieces ranging from about ⅛ to ¼ inchesin diameter.

[0025] Typically for the aforementioned 1048 tank the air pocket 26comprises about 0.5 cu. ft. (depending upon the air pressure): 1 to 2lbs. of the magnesium oxide could be used with about 100 lbs. of thelimestone comprising about 1 cubic feet by volume along with about 0.5cu. ft. by volume of the gravel.

[0026] Typically for the aforementioned 1054 tank the air pocket 26comprises about 0.5 cu. ft. (depending upon the air pressure): 1 to 2lbs. of the magnesium oxide could be used with about 125 lbs. of thelimestone comprising about 1.25 cubic feet by volume along with about0.5 cu. ft. by volume of the gravel.

[0027] Typically for the aforementioned 1248 tank the air pocket 26comprises about 0.5 cu. ft. (depending upon the air pressure): 1 to 2lbs. of the magnesium oxide could be used with about 125 lbs. of thelimestone comprising about 1.25 cubic feet by volume along with about0.75 cu. ft. by volume of the gravel.

[0028] The present invention essentially comprises four modes ofoperation; the treatment mode as depicted in FIG. 1 and the three modesof FIGS. 2-4 which may be broadly described as the regeneration modes;i.e. the backwash mode of FIG. 2, the air injection mode of FIGS. 3 and3a and the rinse mode of FIG. 4. Referring now to FIG. 1, the treatmentmode involves drawing non-aerated water from a water source such as awell, pressurized by a pump (not shown) through inlet line 12 and checkvalve 14 to control valve 16. The check valve is adapted to allow fluidflow toward the control valve 16 but checks fluid flow in the oppositedirection.

[0029] The control valve 16 fluidly connects the inlet line 12 and thetop of the treatment vessel 18. The untreated water then flows throughcompressed air pocket 26. It is important to note that this is the firsttime the untreated water is exposed to air. Hydrogen sulfide andoffensive odors are released from the well water and is captured by theair pocket 26.

[0030] It is well known that oxygen readily dissolves in water underpressure. Water just below water levels A or B accordingly contains suchdissolved oxygen as well as ferrous bicarbonate and ferric oxides.

[0031] As water continues to flow, as depicted by the flow arrows inFIG. 1, the water ph is neutralized upon contact with calcite mineralfilter media 28. Oxygen reacts with soluble iron compounds. Theoxidation reaction of Fe++ to Fe+++ produces ferric oxides. The ferricoxides fasten to the calcite mineral 28 and accordingly, essentially allferric oxides are caught or captured on the calcite mineral filter media28.

[0032] Sediments in the water flow are also captured by the calcitemineral filter media 28. Filter media 30 completes the filtering processas the water flow through the strainer basket 24, up riser tube 22 andto the outlet line 20 via control valve 16. The thus treated waterenters the associated potable water system (not show) with essentiallyevery trace of iron, sulfides, odor and sediment removed. This treatmentprocess is continuous as such treated water is drawn from the treatmentvessel 18 by the demands of the associated potable water system.Typically, the treatment mode runs continuously for approximatelytwenty-four hours before regeneration is required. This period iscontrolled by the control valve 16.

[0033] Referring now to FIG. 2, the backwash mode, which could beconsidered as the first of the regeneration modes, begins after thetreatment mode and is typically six minutes in duration at a flow rateof one gallon per minute to two gallons per minute. The flow rate willvary according to the volumetric dimensions of the treatment vessel 18as will be further discussed below. The timing, time period, flow rateand flow patterns are controlled by the control valve 16. As implied bythe title of this mode the flow of water is reversed as depicted by theflow arrows in FIG. 2.

[0034] Non aerated water is pumped through inlet line 12 and check valve14 to the riser tube 22 via control valve 16. The water flow continuesthrough strainer 24 and gravel media 30. The air pocket 26, which is nowsaturated with hydrogen sulfide and other objectionable gases anddepleted of oxygen, all occurring during the treatment mode, is releasedvia the control valve 16, to drain pipe 32.

[0035] The filter media 28 is lifted slightly. The calcite granules thatcomprise the filter media 28 are in close contact rubbing and scouringeach other thus removing ferric oxides that are fastened to the filtermedia 28. Such loosened ferric oxides are carried upward by the waterflow flushed from the treatment vessel 18 to the drain pipe 32 viacontrol valve 16.

[0036] The duration of the backwash mode can be increased later if thetreatment vessel 18 is not been completely cleansed. By monitoring thedischarge from the drain pipe 32 during the backwash mode it can bedetermined if the discharge is clear. After the Treatment System hasbeen functioning a few weeks the backwash discharge should be clear atfirst then darken, turning orange or brown, depending upon the quantityof iron being removed. Thereafter the discharge from the drain line 32should become clear again before the backwash mode is complete.

[0037] The following are examples of the backwash flow rates: TreatmentTank Size (diameter × height in inches) Backwash flow rate 10 × 48 1.0gpm 10 × 54 1.5 gpm 12 × 48 2.0 gpm

[0038] Referring now to FIG. 3 and FIG. 3a, the air injection mode,which could be considered as the second of the regeneration modes,begins after the backwash mode and is typically twenty-two minutes induration. The flow rate will vary according to the volumetric dimensionsof the treatment vessel 18. The timing, time period, flow rate and flowpatterns are controlled by the control valve 16.

[0039] The air injection mode involves drawing non-aerated water from awater source such as a well, pressurized by a pump (not shown) throughinlet line 12 and check valve 14 to control valve 16.

[0040] Control valve closes the internal bypass (not shown) around thein-line venturi 36 contained in the injector body portion 34 of thecontrol valve. Water flow is then directed through screen 38 forremoving particulate matter in the water that clog the venturi. As waterpasses through the venturi 36, a pressure differential is created at thethroat 40 of the venturi 36.

[0041] A bore 42 axially coextensive with the throat 40 accepts apressure sensitive valve 44, as for example, a Schrader valve such asthe type of Schrader valve employed in U.S. Pat. No. 5,147,530 toChandler. The use of the Schrader valve is a modification to thestandard issue Fleck Company Model 2510 Econominder.

[0042] The Schrader valve opens in response to the pressure differentialat the throat 40 allowing for ambient air to enter the bore 42 to mixwith the water flowing through the venturi 36. The air entrained wateris directed by the control valve 16 to the top of the treatment vessel18. This is the only time that any water is made to flow through theinjector body 34 and its venturi 36.

[0043] Pressure inside the treatment vessel 18 quickly drops as waterinside treatment vessel 18 flows down through filter media 28, gravel30, strainer 24, riser tube 22 through control valve 16 and out drainpipe 32.

[0044] As air entrained water flows into the top of the treatment vessel18 air is released to form air pocket 26. Water flows downward, as abovediscussed, and slowly rinses the lifted and loosely packed filter media28 of untreated water present from the backwash mode. The water level iscontrolled by the control valve 16 to be about ½ inch above the filtermedia 28 when the air injection mode is terminated.

[0045] Several sizes of venturis 36 are available from the manufacturerof the control valve 16, as for example from the Fleck Company.

[0046] Choosing the size or flow rate of the venturi is important foroptimal regeneration and effective water treatment. The following areexamples of flow rates: Treatment Tank Size Injector Venturi flow(diameter × height in rate @ 40 p.s.i. inches) pump pressure 10 × 48 .45gpm 10 × 54 .45 gpm 12 × 48 .84 gpm

[0047] Referring now to FIG. 4, the rinse mode, which could beconsidered as the third and final regeneration mode, begins after theair injection mode and is typically four minutes in duration. The flowrate will vary according to the volumetric dimensions of the treatmentvessel 18. The timing, time period, flow rate and flow patterns arecontrolled by the control valve 16.

[0048] The rinse mode involves bypassing the air injector body 34 andthe venturi 36 therein thereby compressing the air pocket 26. Drawingnon-aerated water from a water source such as a well, pressurized by apump (not shown) through inlet line 12 and check valve 14 to controlvalve 16, air pocket 26, filter media 28, gravel, strainer 24, risertube 22, control valve and out the drain line 32.

[0049] The filter media 28 is compressed to tightly packed state and thepressure in the treatment vessel 18 rises to equilibrium with the pumpcut-off pressure. At this point the rinse mode is terminated and theregeneration cycle is complete.

[0050] The treatment system according to this invention is ready tosupply treated water completely void of iron, hydrogen sulfide,obnoxious odors, sediment and acidity to its associated potable watersystem.

[0051] This is accomplished without a separate aeration tank, an airregulating device or air vent, use of an air compressor, in-linecartridge filter, devices including a venturi that restrict the flow ofwater from the well pump to the pressure switch and pressure system.

[0052] Several tests were conducted employing the present invention onwell water applications. The results of these tests, which confirm theefficacy of this invention, are as follows:

[0053] Test No. I

[0054] Untreated Well Water Analysis

[0055] pH: 5.5

[0056] Ferrous Bicarbonate: 3.0 ppm

[0057] Hydrogen Sulfide: 0.10 ppm

[0058] Well Pump:: ½ hp deep well jet pump

[0059] Maximum pressure: 35 psi

[0060] Maximum flow rate @ 35 psi: 3 gpm

[0061] Fleck 2510 Econominder control valve

[0062] Treatment vessel; 10 inch diameter; 48 inch height

[0063] Calcium carbonate 98%; Magnesium 2%

[0064] Backwash flow rate: 1 gpm; injector size #1*

[0065] Treated Well Water Analysis

[0066] pH: 7.0

[0067] Ferrous Bicarbonate: 0.0 ppm

[0068] Ferric Hydroxide: 0.0 ppm

[0069] Hydrogen Sulfide: 0.0 ppm

[0070] Test No. II

[0071] Untreated Well Water Analysis

[0072] pH: 5.8

[0073] Ferrous Bicarbonate: 7.5 ppm

[0074] Hydrogen Sulfide: 0.15 ppm

[0075] Well Pump:: ½ hp submersible pump

[0076] Maximum pressure: 55 psi

[0077] Maximum flow rate @ 55 psi: 12 gpm

[0078] Fleck 2510 Econominder control valve

[0079] Treatment vessel; 12 inch diameter; 48 inch height

[0080] Calcium carbonate 99%; Magnesium 1%

[0081] Backwash flow rate: 2 gpm; injector size #2*

[0082] Treated Well Water Analysis

[0083] pH: 7.0

[0084] Ferrous Bicarbonate: 0.0 ppm

[0085] Ferric Hydroxide: 0.0 ppm

[0086] Hydrogen Sulfide: 0.0 ppm

[0087] Test No. III

[0088] Untreated Well Water Analysis

[0089] pH: 8.0

[0090] Ferrous Bicarbonate: 0.75 ppm

[0091] Hydrogen Sulfide: 0.05 ppm

[0092] Well Pump:: 1½ hp submersible pump

[0093] Maximum pressure: 60 psi

[0094] Maximum flow rate @ 60 psi: 29 gpm

[0095] Fleck 2510 Econominder control valve

[0096] Treatment vessel; 10 inch diameter; 54 inch height

[0097] Calcium carbonate 100%

[0098] Backwash flow rate: 1.5 gpm; injector size #1*

[0099] Treated Well Water Analysis

[0100] pH: 8.0

[0101] Ferrous Bicarbonate: 0.0 ppm

[0102] Ferric Hydroxide: 0.0 ppm

[0103] Hydrogen Sulfide: 0.0 ppm

[0104] *Injector specifications as found at page 27 in Fleck Co. ServiceManual dated June 1995 covering, among other things, their Model 2500Econominder Control Valve and associated parts.

[0105] While particular examples of the present invention have beenshown and described, it is apparent that changes and modifications maybe made therein without departing from the invention in its broadestaspects. The aim and purpose of the appended claims, therefore, is tocover all such changes and modifications as fall within the true spiritand scope of the invention.

I claim:
 1. A method of treating water including a treatment modecomprising the steps of drawing said water from a pressurized watersource through a controlling means to a treating vessel, the water inletof said treating vessel being substantially at the top of a treatingvessel, contacting said water with pressurized air present at the top ofsaid treating vessel to release substantially all hydrogen sulfide andoffensive odors present in said water and to dissolve oxygen in saidwater which reacts with soluble iron in said water to form ferricoxides, flowing said water through a filter bed of calcite mineral toremove substantially all sediment present in said water and toneutralize the ph of said water and to remove substantially all saidferric oxides from said water, said ferric oxides fastening to saidcalcite minerals and to already fastened ferric oxides, flowing saidwater to a final media means and to the outlet of said treating vesseland through said controlling means to a potable water plumbing systemconnected thereto.
 2. The method of treating water of claim 1 whereinsaid treating vessel is purged of the unwanted gaseous and solidimpurities removed from said pressurized water source during saidtreatment mode is effected by a the backwashing mode steps initiated bysaid controlling means subsequent to said treatment mode comprising thesteps of drawing said water from said pressurized water source throughsaid controlling means to said water outlet of said treating vessel,said outlet being substantially at the bottom of said treating vessel,flowing said water through said final media means and through saidfilter bed of calcite mineral to slightly lift said said calcite mineraland final media to loosen for removal substantially all ferric oxide andsediment contained in said final media and said calcite mineral, flowingthe impurity laden water and the impurity laden pressurized air throughsaid controlling means to drain means to substantially cleanse theinterior of said treating vessel,
 3. The method of treating water ofclaim 2 wherein the presence of said pressurized air at the top of saidtreating vessel during said treatment mode is effected by air injectionmode steps initiated by said controlling means subsequent to saidbackwashing mode comprising the steps of flowing said water from saidpressurized water source through said controlling means to an airinjecting means adapted to combine said water with ambient air in saidcontrolling means, injecting said combined water and air into saidtreating vessel, releasing air from said combined water and air into thetop of said treating vessel, flowing said water through said filter bedof calcite mineral and said final media to a drain means at atmosphericpressure whereby any residual water remaining from said backwashing modeis rinsed from said calcite mineral and said final media, stopping saidair injection mode when the water level in said treating vessel isapproximately 1½ inches above the top of said filter bed of calcite. 4.The method of treating water of claim 3 wherein the final rinse of saidtreating vessel and its contents, before the initiating of said treatingmode by said controlling means, is effected by rinse mode stepsinitiated by said controlling means subsequent to said air injectionmode comprising the steps of flowing said water from said pressurizedwater source through said controlling means, bypassing said airinjecting means, flowing said water through said filter bed of calcitemineral and through said final media means to said drain means, closingsaid drain means whereby said air is compressed and said filter bed ofcalcite mineral and said final media are compacted by said pressurizedwater source.
 5. The method of treating water of claim 4 wherein saidfilter bed of calcite mineral is about 98% calcium carbonate and about0-2% magnesium oxide and said final filter media means is gravel.
 6. Themethod of treating water of claim 4 wherein a check valve means isprovided in the pressurized water line upstream from said controllingmeans.
 7. The method of treating water of claim 5 wherein said water iswell water and said pressurized water source includes a well pump havingpressure sensing means to sense the pressure within said treatingvessel.
 8. The method of treating water of claim 3 wherein said airinjecting means includes a water and air mixing manifold having aventuri means and an axially coextensive bore for accepting a pressuresensitive valve, said pressurized water flows through said venturi meansto create a pressure differential at the throat of said venturi meanscausing said pressure sensitive valve to open in response to thepressure differential to allow for selective entrainment of ambient airin said water at said throat.
 9. The method of treating water of claim 8wherein a filter screen means is provided upstream of said water and airmixing manifold for removing particulate matter before it enters saidmanifold and said pressure sensitive valve.
 10. The method of treatingwater of claim 2 wherein said backwashing mode flow rate through saidtreating vessel is approximately between 1 and 2 gallons per minute andis approximately 6 minutes in duration and occurs approximately onceduring each 24 hour period.
 11. The method of treating water of claim 3wherein said air injection mode flow rate through said treating vesselis approximately between 0.45 and 0.84 gallons per minute and isapproximately 22 minutes in duration.
 12. The method of treating waterof claim 4 wherein said rinse mode is approximately 4 minutes induration and occurs approximately once during each 24 hour period.
 13. Apressurized water system comprising a single treating vessel foraccepting water from a pressurized water source having a water columnand a pressurized air head, substantially all hydrogen sulfide andoffensive odors present in said water passing therethrough beingreleased in said air and oxygen in said air dissolves in said waterwhich reacts with soluble iron in said water to form ferric oxides, acontrolling means substantially at the top of said treating vesseldefines an inlet and an outlet for water to pass therethough and definesa drain for the purging of unwanted products removed from the treatedwater, said inlet connected to said pressurized water source, saidoutlet connected to potable water plumbing, a filter bed of calcitemineral for removing substantially all sediment present in said waterand to neutralize the ph of said water and to remove substantially allsaid ferric oxides from said water, said ferric oxides fastening to saidcalcite minerals and to already fastened ferric oxides, a final filtermedia to remove any residual unwanted particulate matter from said waterpassing therethrough to said outlet.
 14. The pressurized water system ofclaim 13 wherein said filter bed of calcite mineral is about 98% calciumcarbonate and about 0-2% magnesium oxide and said final filter mediameans is gravel.
 15. The pressurized water system of claim 13 wherein acheck valve means is provided in the pressurized water line upstreamfrom said controlling means.
 16. The pressurized water system of claim13 wherein said water is well water and said pressurized water sourceincludes a well pump having pressure sensing means to sense the pressurewithin said treating vessel.
 17. The pressurized water system of claim13 wherein said controlling means includes a bypassable air injectingmeans having a water and air mixing manifold with venturi means and anaxially coextensive bore for accepting a pressure sensitive valve, saidpressurized water flows through said venturi means to create a pressuredifferential at the throat of said venturi means causing said pressuresensitive valve to open in response to the pressure differential toallow for selective entrainment of ambient air in said water at saidthroat.
 18. The pressurized water system of claim 17 wherein a filterscreen means is provided upstream of said water and air mixing manifoldfor removing particulate matter before it enters said manifold and saidpressure sensitive valve, said pressure sensitive valve being a schradervalve.
 19. A pressurized water treating apparatus comprising incombination, an inlet means connecting said apparatus to a pressurizedwater source a including a check valving means, a treating vessel forcontaining a water column and a pressurized air head, substantially allhydrogen sulfide and offensive odors present in said water passingtherethrough being released in said air and oxygen in said air dissolvesin said water which reacts with soluble iron in said water to formferric oxides, a controlling means substantially at the top of saidtreating vessel defines an inlet and an outlet for water to passtherethough and defines a drain for the purging of unwanted productsremoved from the treated water, said inlet connected to said pressurizedwater source, said outlet connected to potable water plumbing, saidcontrolling means includes a bypassable air injecting means having awater and air mixing manifold with a venturi means and an axiallycoextensive bore for accepting a pressure sensitive valve, saidpressurized water flows through said venturi means to create a pressuredifferential at the throat of said venturi means causing said pressuresensitive valve to open in response to the pressure differential toallow for selective entrainment of ambient air in said water at saidthroat, a filter bed of calcite mineral for removing substantially allsediment present in said water and to neutralize the ph of said waterand to remove substantially all said ferric oxides from said water, saidferric oxides fastening to said calcite minerals and to already fastenedferric oxides, a final filter media to remove any residual unwantedparticulate matter from said water passing therethrough to said outlet,said filter bed of calcite mineral is about 98% calcium carbonate andabout 0-2% magnesium oxide and said final filter media means is gravel.20. A pressurized water treating apparatus of claim 19 wherein a checkvalve means is provided in the pressurized water line upstream from saidcontrolling means.